Intake manifold for internal combustion engine having exhaust ga

Details Intake manifold for internal combustion engine having exhaust ga Intake manifold for internal combustion engine having exhaust ga

1985-08-19

1987-03-10

Wolfe, Jr., Willis R.

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

123569, 123 52M, F02M 2506

Patent

active

046483730

ABSTRACT:
An intake manifold (2) for an internal combustion engine equipped with an exhaust gas recirculation (EGR) system for recirculating a part of the exhaust gas to the intake system, having a V-shaped rib (13) formed on the inner surface thereof with the vertex (13a) directed upstream with respect to the flow of the intake air. The V-shaped rib is positioned upstream of the EGR gas outlet (10) of the EGR system so that oil contained in blow-by gas supplied by a positive crankcase ventilation (PCV) system or charged-air supplied by a turbocharger into the intake manifold (2) does not flow into the EGR gas outlet (10), but flows away from the EGR gas outlet (10). Therefore, the deposition of sludge around the EGR gas outlet (10) is prevented and a sufficient EGR rate is secured.

REFERENCES:
patent: 3680534 (1972-08-01), Chavant
patent: 3730156 (1973-05-01), Sarto
patent: 4119071 (1978-10-01), Hattori
patent: 4364369 (1982-12-01), Nomura et al.

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